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TPS92518-Q1
SLUSCZ1 –MAY 2017
TPS92518-Q1 Automotive Dual Channel Buck LED Controller with SPI Interface,
Analog and PWM Dimming
1 Features
3 Description
The TPS92518-Q1 family of parts are dual channel
buck LED current controllers with
communications interface. The serial communication
interface provides a singular communication path for
multichannel and platform lighting driver module
(LDM) applications.
1
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AEC-Q100 Qualified for Automotive Applications
a
SPI
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Grade 1: –40°C to 125°C Ambient Operating
Temperature
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Device HBM Classification Level H2
Device CDM Classification Level C5
The TPS92518-Q1 uses a quasi-hysteretic control
method that supports switching frequencies ranging
from 1 kHz to 2 MHz. This control method enables
superior, high frequency shunt FET dimming and also
handles the demanding dynamic loads of adaptive
LED matrix based headlamp systems.
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Wide Input Voltage Range 6.5 V to 65 V
Two independent Buck LED Controllers
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High Bandwidth, Quasi-Hysteretic Control
Adjustable High-Side Sense
Direct PWM Dimming Input
Software programmable SPI set points (Precision
Peak Current, Controlled Off-Time and Output
Voltage Sense) enables designers to develop a single
LED driver solution for multiple load configurations
that can be quickly reconfigured for future LED driver
design requirements.
Cycle-by-Cycle Current Limit
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SPI Communications Interface
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Software configurable Set Points (8-bit)
Digital Calibration and Binning
Fault Monitoring and Reporting
Advanced, High Precision Dimming
The TPS92518-Q1 device has an input range up to
42 V. The TPS92518HV-Q1 is a high-voltage option
with an input range up to 65 V.
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10,000:1 PWM Dimming Range
255:1 Analog Dimming Range
High Frequency Shunt FET Dimming
Device Information(1)
PART NUMBER
TPS92518-Q1
PACKAGE
BODY SIZE (NOM)
2 Applications
HTSSOP (24)
7.7 mm x 4.4 mm
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Automotive LED Lighting: High and Low Beam,
DRL, Turn, Position
TPS92518HV-Q1
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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Constant Current LED Driver
Switched Matrix Headlamps
AFS Headlamps
LED General Lighting
Simplified Schematic
Input Voltage
Battery or Boost
Regulator
Buck CH1
EN/UV
PWM1
PWM2
VLED1
µC
TPS92518-Q1
Buck CH2
Input Voltage
ñ Peak
ñ Off time
ñ Enable
ñ Faults
ñ Temp
SPI
VLED2
MCU VCC
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.